JP2003232156A - Case equipped with double lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a case having a compact configuration and having no possibility of opening due to an erroneous operation. <P>SOLUTION: A handle 1 and a handle base 2 are placed on a front side wall 23 of a housing portion of the case, and a rear box 4 is placed at its opposite side and is attached with an attaching screw 8. Push buttons 5 are built in the right and left respectively; and when both the push-buttons 5 are opened to the right and left at the same time by both the hands, both the linkage portions 51 can be removed from the linking claw and the lid can be opened without possibility of making erroneous operation. Also, the opening of the lid can be made easier by arranging a projection 41 exerted upward by the elasticity. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case having a double lock.

[0002]

2. Description of the Related Art Usually, a conventional musical instrument is usually stored in one case.
In many cases, individual locking metal fittings are attached to the center.
As a result, the lock may be accidentally released and the lid may open, and even if an expensive instrument such as an instrument is put in, the lid may accidentally open and damage the instrument. .

Conventionally, there has been a lock device provided with two push buttons on both sides, but it can be unlocked easily by pushing both push buttons inward with the fingers of one hand, and there is a risk of malfunction. Not a few.

[0004]

[Problems to be solved] In order to reduce the risk of accidentally opening the lid in the case of inserting an expensive instrument such as an instrument,
It should be double locked so that the lid cannot be opened without operating both locking devices with both hands at the same time. In addition, when the double lock is used, it is important to make the structure compact in order to reduce the size of the parts and reduce the cost. If the lid can be opened automatically to some extent, the opening of the lid becomes very easy.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a lock device for locking a cover portion of a case to a housing portion on a side wall of a front surface of the case, which is provided on the left and right sides inside a handle of the case. The present invention provides a case having a double lock, which is characterized in that it is provided individually and that a protrusion that is always urged upward by elastic force is provided on the accommodation portion side.

[0006]

1 is a perspective view of a case 20 according to the present invention, in which 1 is a handle, 2 is a handle base, 21 is a case lid, 22 is a lower housing portion, 10 is a left and right locking device, Reference numeral 5 is a push button of the lock device. Handle 1
The lock device 10 and the lock device 10 are referred to as a case operation unit 30. The operation unit 30 is attached to the side wall 23 on the front surface of the housing unit 22 of the case 20.

2 is a front view of the operating portion 30 taken out, FIG. 3 is a bottom view of FIG. 2 viewed from the D direction, FIG. 4 is a top view of FIG. 2 viewed from the F direction, and FIG. 6 is a cross-sectional view taken along the line X, and FIG. 6 is a perspective view of the case where the case is opened as seen from above.

As shown in the figure, the left and right locking devices 10 are each composed of a push button 5 and a push button spring 6 for urging the push button 5 inward. Push button 5
Are built in one each on the left and right of the handle base 2 and are biased inward by push button springs 6. As can be seen from FIG. 6, the locking plate 7 is attached to the front surface of the lid portion 21. As shown in FIG. 7, the locking plate 7
Locking claws 71 are formed on both sides of the locking device 10 so as to correspond to the left and right locking devices 10. In the figure, 3 indicates a handle support.

As can be seen from FIG. 3, FIG. 4, FIG. 5, FIG. 6, etc., the back box 4 is attached inside the side plate 23 so as to face the handle base 2 with the set screw 8. The push button spring 6 is in the back box 4 and biases the push button 5. (See FIG. 5) The push button 5 is normally biased by the spring 6 and pushed inward, and when the lid is closed, the locking claw 71 from the locking plate 7 attached to the front surface of the lid is closed. Through the hole 52 in the push button 5, engages with the locking portion 51 formed in the push button 5,
Is locked to prevent it from opening.

When the case is opened, if the left and right push buttons 5 are simultaneously pushed outward by both hands and moved outward against the spring 6, the engaging portion 51 and the engaging claw 71 are disengaged. The lid 21 can be opened. As described above, in the case provided with the double lock of the present invention, the lid cannot be opened unless the left and right push buttons 5 are simultaneously pushed outward with both hands.

Further, since the left and right push buttons 5 are built in the handle base 2 and are inside the handle 1, the construction of the operating portion 30 including the lock device 10 becomes compact, the parts can be downsized, and the cost can be reduced. .

As shown in FIG. 8, if the back box 4 is provided with a protrusion 41 that is always urged upward by elastic force, the protrusion 41 is pushed down against the elastic force when the lid is closed. However, when the push button 5 is pushed to disengage the engagement between the engagement portion 51 and the engagement claw 71, the projection 41 is elastically urged upward, so that the lid portion 21 is lifted upward. The lid 21 is slightly opened. With this structure, the lid 21 can be released very easily.

[0013]

The case having the double lock according to the present invention has the above-described structure, and the lid portion is not opened unless the right and left push buttons 5 are operated by pushing them outward simultaneously with both hands. Therefore, when an expensive instrument such as a musical instrument is put in, there is no risk that the lid will open and the contents will be damaged due to a malfunction. In addition, the compact structure also contributes to cost reduction.

Further, by providing a protrusion on the accommodation portion side which is always urged upward by elasticity, the lid portion is automatically lifted upward and a little opened by pressing the button with both hands. The release of the parts becomes very easy.

[Brief description of drawings]

FIG. 1 is a perspective view of a case according to the present invention.

FIG. 2 is a front view of an operation unit

FIG. 3 is a bottom view of FIG. 2 viewed from the D direction.

FIG. 4 is a top view of FIG. 2 seen from the F direction.

5 is a sectional view taken along line XX of FIG.

FIG. 6 is a perspective view showing a case where the case is opened.

FIG. 7 is a view showing a locking plate.

FIG. 8 is a drawing similar to FIG. 6 showing a second embodiment.

[Explanation of symbols]

1 handle 2 handle base 3 handle support 4 back box 5 push buttons 6 push button spring 7 Lock plate 8 mounting screws 10 Lock device 20 cases 21 Lid 22 Housing 23 Side wall of accommodation section 30 Operation part 41 Protrusion that is urged upward by elasticity 51 Locking part 52 Claw passage hole 71 Locking claw

Claims (2)

[Claims] 1. A case having a double lock, characterized in that two lock devices are provided on the front side wall of the case for locking the lid part of the case to the housing part on the left and right inside the handle of the case. A case with a double lock. 2. The case provided with a double lock according to claim 1, wherein in the case, a protrusion that is always biased upward by elastic force is provided on the accommodation portion side.